Oceanic protection of prebiotic organic compounds from UV radiation
Oceanic protection of prebiotic organic compounds from UV radiation
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DOI：
10.1073/pnas.95.13.7260
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发表时间：
1998-06-23
影响因子：
11.1
通讯作者：
Miller, SL
中科院分区：
文献类型：
--
作者：
Cleaves, HJ;Miller, SL
人们经常说，由于没有臭氧层，紫外线会对益生元有机化合物造成大规模破坏。早期太阳紫外线通量的增加加剧了这个问题。这适用于地球和外星起源的有机化合物。试图处理这个问题通常涉及大气吸收剂，我们在这里表明，益生元有机聚合物以及几种无机化合物足以保护海洋有机分子免受紫外线降解。这种含水保护是除了任何大气紫外线吸收剂之外的，应该是一种普遍存在的行星现象，有助于增加行星可居住区的大小。
It is frequently stated that UV light would cause massive destruction of prebiotic organic compounds because of the absence of an ozone layer. The elevated UV flux of the early sun compounds this problem. This applies to organic compounds of both terrestrial and extraterrestrial origin. Attempts to deal with this problem generally involve atmospheric absorbers, We show here that prebiotic organic polymers as well as several inorganic compounds are sufficient to protect oceanic organic molecules from UV degradation. This aqueous protection is in addition to any atmospheric UV absorbers and should be a ubiquitous planetary phenomenon serving to increase the size of planetary habitable zones.